188734980 has 192 divisors, whose sum is σ = 647055360. Its totient is φ = 40144896.

The previous prime is 188734967. The next prime is 188734981. The reversal of 188734980 is 89437881.

It is not an unprimeable number, because it can be changed into a prime (188734981) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 534484 + ... + 534836.

It is an arithmetic number, because the mean of its divisors is an integer number (3370080).

Almost surely, 2^188734980 is an apocalyptic number.

188734980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 188734980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323527680).

188734980 is an abundant number, since it is smaller than the sum of its proper divisors (458320380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

188734980 is a wasteful number, since it uses less digits than its factorization.

188734980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 188734980 is about 13738.0850193904. The cubic root of 188734980 is about 573.6109938973.

The spelling of 188734980 in words is "one hundred eighty-eight million, seven hundred thirty-four thousand, nine hundred eighty".